CN104499238A - Nonwoven Fabric Bulk Recovery Device And Nonwoven Fabric Bulk Recovery Method - Google Patents
Nonwoven Fabric Bulk Recovery Device And Nonwoven Fabric Bulk Recovery Method Download PDFInfo
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- CN104499238A CN104499238A CN201310541205.6A CN201310541205A CN104499238A CN 104499238 A CN104499238 A CN 104499238A CN 201310541205 A CN201310541205 A CN 201310541205A CN 104499238 A CN104499238 A CN 104499238A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B5/00—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating
- D06B5/02—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating through moving materials of indefinite length
- D06B5/08—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating through moving materials of indefinite length through fabrics
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C17/00—Fulling
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C3/00—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Nonwoven Fabrics (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
This device for recovering the bulk of a nonwoven fabric by heating the nonwoven fabric by blowing hot air thereon is characterized by being provided with: case units (30, 40) in which a conveyance space is formed through which the nonwoven fabric is conveyed; a heating mechanism which has jet openings (16b, 16d) for jetting hot air into the conveyance space from one side to the other side in the conveyance direction of the nonwoven fabric in the conveyance space, and has emission openings for emitting, from the conveyance space, the hot air which flows along the conveyance direction while contacting one of the two surfaces of the nonwoven fabric; and deformation mechanisms (12c, 12e) which deform the nonwoven fabric discharged from the case units (30, 40) such that one side of the woven fabric is convex.
Description
Technical field
The present invention relates to the volume recovery device of nonwoven fabric and the volume restoration methods of nonwoven fabric.
Background technology
Usually, nonwoven fabric being rolled into after formation web-like and carrying out keeping with the form of nonwoven fabric roll, when carrying out other operations, nonwoven fabric to be released use from nonwoven fabric roll afterwards.In addition, owing to applying tension force when reeling nonwoven fabric to nonwoven fabric, by compressing, volume reduces the nonwoven fabric be therefore wound in a thickness direction.Therefore, propose a kind of such method: send hot blast by the top blast to the direction orthogonal with the face of nonwoven fabric to nonwoven fabric and by nonwoven heating, the volume of nonwoven fabric recovered (such as with reference to patent document 1).
Prior art document
Patent document
Patent document 1: No. 2004-137655, Japanese Unexamined Patent Publication
Summary of the invention
the problem that invention will solve
But, in the method for above-mentioned patent document 1, owing to blowing hot blast in the opposite direction towards with the side making the volume of nonwoven fabric recover, therefore may be decreased through and nonwoven fabric be heated and the volume recovery effects produced.In addition, with regard to the face of the nonwoven fabric of the side that blowed hot blast, form the fiber of nonwoven fabric fuse with one another and make the gap stenosis between fiber narrow, may be decreased through and nonwoven fabric be heated and the volume recovery effects that produces.
Namely the present invention completes in view of above-mentioned problem in the past, its object is to, and suppresses the reduction of the volume recovery effects produced by heating nonwoven fabric.
for the scheme of dealing with problems
The present invention for achieving the above object is a kind of volume recovery device of nonwoven fabric, its for blowing hot blast to nonwoven fabric by nonwoven heating, thus the volume of above-mentioned nonwoven fabric is recovered, it is characterized in that, the volume recovery device of this nonwoven fabric comprises heating arrangements and deformation mechanism, this heating arrangements comprises: shell unit, and it is formed with the conveying space for carrying above-mentioned nonwoven fabric; Jet, its for the side on the throughput direction of above-mentioned nonwoven fabric in above-mentioned conveying space towards opposite side by spray hot wind in above-mentioned conveying space; And outlet, it is discharged from above-mentioned conveying space for making above-mentioned hot blast, and above-mentioned hot blast contacts while flow along above-mentioned throughput direction with a face in two faces of above-mentioned nonwoven fabric; This deformation mechanism is that convex mode is out of shape for making the above-mentioned nonwoven fabric that ejects from above-mentioned shell unit with that side, an above-mentioned face of above-mentioned nonwoven fabric.
Can content other features clearly of the present invention according to this description and accompanying drawing.
the effect of invention
Adopting the volume recovery device of nonwoven fabric of the present invention and the volume restoration methods of nonwoven fabric, the reduction of the volume recovery effects produced by heating nonwoven fabric can being suppressed.
Accompanying drawing explanation
Figure 1A is the stereogram of pet sheet material, and Figure 1B is the sectional view of the pet sheet material at the line BB place of Figure 1A.
Fig. 2 A is the sectional view of the volume recovery device of the nonwoven fabric of the 1st embodiment, and Fig. 2 B is the sectional view of the 1st mould component at the line BB place of Fig. 2 A.
Fig. 3 is the sectional view around the 1st mould component, the 2nd mould component.
Fig. 4 is the sectional view of the volume recovery device of the nonwoven fabric of the 2nd embodiment.
Fig. 5 is the sectional view around the 1st mould component ~ the 3rd mould component.
Detailed description of the invention
Content according to this description and accompanying drawing, content that at least can be clearly following.
A kind of volume recovery device of nonwoven fabric, its for blowing hot blast to nonwoven fabric by nonwoven heating, thus the volume of above-mentioned nonwoven fabric is recovered, it is characterized in that, the volume recovery device of this nonwoven fabric comprises heating arrangements and deformation mechanism, this heating arrangements comprises: shell unit, and it is formed with the conveying space for carrying above-mentioned nonwoven fabric; Jet, its for the side on the throughput direction of above-mentioned nonwoven fabric in above-mentioned conveying space towards opposite side by spray hot wind in above-mentioned conveying space; And outlet, it is discharged from above-mentioned conveying space for making above-mentioned hot blast, and above-mentioned hot blast contacts while flow along above-mentioned throughput direction with a face in two faces of above-mentioned nonwoven fabric; This deformation mechanism is that convex mode is out of shape for making the above-mentioned nonwoven fabric that ejects from above-mentioned shell unit with that side, an above-mentioned face of above-mentioned nonwoven fabric.
Adopt the volume recovery device of such nonwoven fabric, because the throughput direction of hot blast along nonwoven fabric flows, therefore, it is possible to suppress as send the situation of hot blast to the top blast of the direction orthogonal with the face of nonwoven fabric to nonwoven fabric, the situation of the reduction of the volume recovery effects of nonwoven fabric.In addition, be that convex mode is out of shape by making nonwoven fabric with the nonwoven fabric being blowed hot blast side, face, the fiber that the fusion of of a nonwoven fabric side, face is got up can be untied, thus the gap widens between fiber can be made, therefore, it is possible to suppress the reduction of the volume recovery effects of nonwoven fabric.In addition, by being untied by the fiber of nonwoven fabric side, face, nonwoven fabric face can be made to become soft.
According to the volume recovery device of above-mentioned nonwoven fabric, it is characterized in that, above-mentioned deformation mechanism makes the naturally chilled above-mentioned nonwoven fabric distortion in the outside of above-mentioned shell unit.
Adopt the volume recovery device of such nonwoven fabric, the situation that nonwoven fabric is out of shape with habituation can be suppressed.In addition, to be softened with after heating and compared with the fiber being easy to the state of extending, naturally chilled fiber is easier to be out of shape by nonwoven fabric untie.Thus, by making the chilled nonwoven fabric distortion of nature, more reliably the fiber that the fusion of nonwoven fabric side, face is got up can be untied, the reduction of the volume recovery effects of nonwoven fabric can be suppressed.
According to the volume recovery device of above-mentioned nonwoven fabric, it is characterized in that, above-mentioned deformation mechanism above-mentioned nonwoven fabric can be wound up the conveying roller carrying out carrying.
Adopt the volume recovery device of such nonwoven fabric, compared with the situation of deformation mechanism is also set in addition except conveying roller is set, the increase of parts count can be prevented.
According to the volume recovery device of above-mentioned nonwoven fabric, it is characterized in that, the above-mentioned nonwoven fabric that have passed through above-mentioned deformation mechanism utilizes other above-mentioned heating arrangements to heat again.
Adopt the volume recovery device of such nonwoven fabric, due to when heating again, hot blast can while with utilize deformation mechanism fiber untied after a face of nonwoven fabric contact while flow along throughput direction, therefore, it is possible to improve the efficiency of heating surface to nonwoven fabric.
According to the volume recovery device of above-mentioned nonwoven fabric, it is characterized in that, the above-mentioned conveying space of the above-mentioned conveying space of above-mentioned heating arrangements and other above-mentioned heating arrangements is arranged on the direction intersected with the throughput direction of above-mentioned nonwoven fabric in above-mentioned conveying space with arranging, above-mentioned deformation mechanism is such conveying roller: wound up by the above-mentioned nonwoven fabric of the above-mentioned conveying space that have passed through above-mentioned heating arrangements and carry, while make above-mentioned nonwoven fabric overturn in order to above-mentioned nonwoven fabric is supplied to the above-mentioned conveying space of other above-mentioned heating arrangements.
Adopt the volume recovery device of such nonwoven fabric, the length of heating arrangements on the throughput direction of nonwoven fabric can be shortened, thus the miniaturization of heating arrangements can be sought.In addition, by utilizing conveying roller to make nonwoven fabric overturn the degree of deformation (flexibility) that can improve nonwoven fabric, therefore, it is possible to untied by the fiber that the fusion of nonwoven fabric side, face is got up more reliably, the reduction of the volume recovery effects of nonwoven fabric can be suppressed.
In addition, a kind of volume restoration methods of nonwoven fabric, hot blast is blowed to nonwoven fabric and by nonwoven heating, thus the volume of above-mentioned nonwoven fabric is recovered, it is characterized in that, the volume restoration methods of this nonwoven fabric comprise the steps: side on the throughput direction of above-mentioned nonwoven fabric in conveying space towards opposite side by spray hot wind in the above-mentioned conveying space of the above-mentioned nonwoven fabric be formed in shell unit, by making above-mentioned hot blast while contact while flow along above-mentioned throughput direction with a face in two faces of above-mentioned nonwoven fabric, by above-mentioned nonwoven heating; And make the above-mentioned nonwoven fabric ejected from above-mentioned shell unit be that convex mode is out of shape with that side, an above-mentioned face of above-mentioned nonwoven fabric.
Adopt the volume restoration methods of such nonwoven fabric, because the throughput direction of hot blast along nonwoven fabric flows, therefore, it is possible to suppress as send the situation of hot blast to the top blast of the direction orthogonal with the face of nonwoven fabric to nonwoven fabric, the situation of the reduction of the volume recovery effects of nonwoven fabric.In addition, be that convex mode is out of shape by making nonwoven fabric with the nonwoven fabric being blowed hot blast side, face, the fiber that the fusion of of a nonwoven fabric side, face is got up can be untied, the gap widens between fiber can be made, therefore, it is possible to suppress the reduction of the volume recovery effects of nonwoven fabric.In addition, by being untied by the fiber of nonwoven fabric side, face, nonwoven fabric face can be made to become soft.
pet sheet material 1
Figure 1A is the stereogram of pet sheet material 1, and Figure 1B is the sectional view of the pet sheet material 1 at the line BB place of Figure 1A.The nonwoven fabric utilizing the volume recovery device (aftermentioned) of nonwoven fabric of the present invention to recover volume such as can be used as the top layer sheet 3 etc. of pet sheet material 1.Pet can be laid on sheet material 1 excreta floor etc. coming for the treatment of animal, pet sheet material 1 has the top layer sheet 3 of the liquid permeability such as in rectangular shape when overlooking, the bottom chip 5 of the liquid-impermeable of roughly the same shape and the absorbefacient absorber 4 of liquid that is clipped between two sheet materials 3,5.Top layer sheet 3, absorber 4, bottom chip 5 utilize hot-melt adhesive etc. to be joined together each other, in addition, at the outer peripheral edge 1e place that there is not absorber 4 of pet with sheet material 1, utilize hot-melt adhesive etc. to be joined together between top layer sheet 3 and bottom chip 5.
Absorber 4 such as can list such structure: utilize the structure that the absorbability core 4c being scattered with superabsorbent polymer (so-called SAP) in the liquidabsorbing fibres such as paper pulp fiber covers by the cover 4t of the liquid permeabilities such as tissue sheet.In addition, bottom chip 5 such as can list the thin-film materials such as polyethylene (hereinafter referred to as PE), polypropylene (hereinafter referred to as PP) and polyethylene terephthalate (hereinafter referred to as PET).
Top layer sheet 3 can list such nonwoven fabric 3: as shown in Figure 1B, at a face 3a(hereinafter referred to as surface) be alternately arranged with the groove portion 3t of linearity and the teat 3p of linearity in the width direction, another face 3b(is hereinafter referred to as the back side) shape in general planar.Such nonwoven fabric 3 can be formed by the process (with reference to No. 2009-11179, Japanese Unexamined Patent Publication etc.) that blows of known air stream, its part of rousing into teat 3p can be formed by laterally being blown afloat by the fiber being originally in the part of groove portion 3t.In addition, in order to increase the liquid permeability of top layer sheet 3, multiple through hole 3h that through-thickness runs through also can be set on groove portion 3t.
the volume of nonwoven fabric 3 recovers
Usually, being rolled into web-like after it has been manufactured with the nonwoven fabric 3 of top layer sheet 3 grade of sheet material 1 and carrying out keeping by being used as above-mentioned pet with the form of nonwoven fabric roll, when carrying out Product processing, nonwoven fabric 3 to be released use from nonwoven fabric roll afterwards.In addition, when reeling nonwoven fabric 3, in order to prevent nonwoven fabric 3 irregular movement or seek the miniaturization etc. of nonwoven fabric roll, and tension force is applied to nonwoven fabric 3.Therefore, be rolled into the nonwoven fabric after web-like 3 and compressed in a thickness direction, the volume of nonwoven fabric 3 reduces.So fluid drainage, reflow, the flexibility of nonwoven fabric 3 reduce.Therefore, in the present invention, by blowing hot blast to nonwoven fabric 3, nonwoven fabric 3 is heated, the volume of nonwoven fabric 3 is recovered.Below, in detail the volume recovery device (volume restoration methods) of nonwoven fabric 3 is described.
In addition, nonwoven fabric 3 of the present invention can list the structure that as shown in Figure 1B, surperficial 3a is concaveconvex shape.The average basis weight of the nonwoven fabric 3 shown in Figure 1B is such as 10 ~ 200(g/m
2), the average basis weight of the central portion of teat 3p is such as 15 ~ 250(g/m
2), the average basis weight of the bottom of groove portion 3t is 3 ~ 150(g/m
2).Such as, but be not limited thereto, the nonwoven fabric of the shape of general planar that both can be two faces be all also can be two faces is all the nonwoven fabric of concaveconvex shape.
In addition, the fiber forming nonwoven fabric 3 of the present invention is thermoplastic resin fibre's (hot melt adhesive fiber), such as, also can be composite fibre or the core of the core sheath structure that core is PET, sheath is PE is PP, sheath is PE the composite fibre of core sheath structure or the fiber of side-by-side configuration (Japanese: サ イ De バ イ サ イ De Agencies makes) or the individual fibers be made up of single thermoplastic resin.And nonwoven fabric 3 also can have crinkled fibre.Crinkled fibre refers to the fiber of indention shape, Ω shape, the crimped shape such as spiral-shaped.In addition, nonwoven fabric 3 can list such nonwoven fabric: the fibre length of fiber is such as in the scope of 20mm ~ 100mm, and fiber number is such as 1.1dtex ~ 8.8dtex.
1st embodiment
the volume recovery device of nonwoven fabric
Fig. 2 A is the sectional view (sectional view being normal direction with the width of nonwoven fabric 3) of the volume recovery device 10 of the nonwoven fabric 3 of the 1st embodiment, and Fig. 2 B is the sectional view of the 1st mould component 30 at the line BB place of Fig. 2 A.Fig. 3 is the sectional view (sectional view being normal direction with the width of nonwoven fabric 3) around the 1st mould component 30, the 2nd mould component 40.Below, situation to make the volume of such nonwoven fabric 3 recover: this nonwoven fabric 3 is used as top layer sheet 3(Figure 1B of above-mentioned pet sheet material 1), it is rolled into the nonwoven fabric roll (not shown) of web-like, and can release from this nonwoven fabric roll and to use and for continuous print.In addition, the direction groove portion 3t, the teat 3p that are formed in the surperficial 3a of nonwoven fabric 3 extended is as nonwoven fabric 3 continuous print direction.In addition, X-direction shown in accompanying drawing is corresponding with the throughput direction of nonwoven fabric 3 in the 1st mould component 30, the 2nd mould component 40, Y-direction shown in accompanying drawing is corresponding with the width of nonwoven fabric 3, using the direction orthogonal with X-direction and Y-direction as above-below direction.
The volume recovery device 10 of the nonwoven fabric 3 of the 1st embodiment has heating unit 11 and for carrying the conveying roller 12a ~ 12e of nonwoven fabric 3.Heating unit 11 has warm-air supply source 13(with reference to Fig. 2 A), hot air duct 14, the 1st mould component 30(be equivalent to heating unit), the 2nd mould component 40(is equivalent to heating unit), for by spray hot wind to the conveying space 15a ~ 15d(of the nonwoven fabric 3 be formed in the 1st mould component 30, the 2nd mould component 40 with reference to Fig. 3) in jet 16a ~ 16d and outlet 17a ~ 17d(reference Fig. 2 A for making hot blast discharge from conveying space 15a ~ 15d), nonwoven fabric 3 is heated in conveying space 15a ~ 15d.In addition, for convenience of explanation, according to from be positioned at nonwoven fabric 3 transport path upstream side conveying roller order, be called the 1st conveying roller 12a, the 2nd conveying roller 12b, the 3rd conveying roller 12c, the 4th conveying roller 12d, the 5th conveying roller 12e successively.In addition, the 1st mould component 30 and the 2nd mould component 40 are equivalent to shell unit of the present invention altogether.
Warm-air supply source 13 has fan 131 and heater 132, and fan 131 sucks extraneous gas, and will be delivered to hot air duct 14 by the warmed-up air of heater 132.Make such situation then better: make the variable speed of fan 131 thus the air quantity of hot blast can be adjusted, or make the variable temperatures of heater 132 thus the temperature of hot blast can be adjusted.In addition, in this embodiment, become and a warm-air supply source 13 is respectively set for each mould component 30,40, but be not limited thereto, such as also warm-air supply source 13 can be set for each conveying space 15a ~ 15d, or also a warm-air supply source 13 can be set for heating unit 11.In addition, the warm-air supply source 13 arranged for the 2nd mould component 40 and hot air duct 14 is eliminated in fig. 2.In addition, in this embodiment, nonwoven fabric 3 is blowed and is flowed by warmed-up air and the hot blast produced and nonwoven fabric 3 is heated, but in broad terms, wind also comprises the flowing of the gas such as nitrogen, non-active gas.Therefore, such as also can blow nitrogen to nonwoven fabric 3 nonwoven fabric 3 is heated.
1st mould component 30 has: base component 31; 1st lid component 32, its with the empty standard width of a room in an old-style house of the lower surface 31a of base component 31 every mode and the lower surface 31a of base component 31 relatively configure; 2nd lid component 33, its with the empty standard width of a room in an old-style house of the upper surface 31b of base component 31 every mode and the upper surface 31b of base component 31 relatively configure; And on the width of nonwoven fabric 3 relative pair of side plates 34,35(with reference to Fig. 2 B).And, in the 1st mould component 30, be formed with conveying space 15a, 15b of two nonwoven fabric arranged in the vertical direction 3.In detail, be formed by the 1st conveying space 15a of the upper surface 32a of the lower surface 31a of base component 31, the 1st lid component 32, pair of side plates 34,35 division and by the 2nd conveying space 15b of the lower surface 33a of the upper surface 31b of base component 31, the 2nd lid component 33, pair of side plates 34,35 division.
In the 1st conveying space 15a, the left side of nonwoven fabric 3 in X-direction (throughput direction) is carried to the right, and in the 2nd conveying space 15b, the right side of nonwoven fabric 3 in X-direction is carried to the left.Therefore, side on the left of the X-direction of the 1st mould component 30 be formed enter the 1st conveying space 15a for nonwoven fabric 3 entrance 36a(with reference to Fig. 3) and the outlet 36b that discharges from the 2nd conveying space 15b for nonwoven fabric 3, the side on the right side of the X-direction of the 1st mould component 30 is formed with the outlet 36c that discharges from the 1st conveying space 15a for nonwoven fabric 3 and supplies nonwoven fabric 3 to enter the entrance 36d of the 2nd conveying space 15b.
In addition, as shown in Figure 3, the base component 31 that the 1st mould component 30 possesses has: the 1st lower surface component 311 and the 2nd lower surface component 312, the 1st upper surface component 313 forming the upper surface 31b of base component 31 and the 2nd upper surface component 314, the left surface component 315 the 1st lower surface component 311 and the 2nd upper surface component 314 linked up and the right flank component 316 the 2nd lower surface component 312 and the 1st upper surface component 313 linked up that form the lower surface 31a of base component 31.And, position on the left of X-direction in the lower surface 31a of base component 31, be namely formed with the 1st jet 16a of slit-shaped by the position of entrance 36a side of the 1st conveying space 15a, the position on the right side of the X-direction in the upper surface 31b of base component 31, be namely formed with the 2nd jet 16b of slit-shaped by the position of the entrance 36d side of the 2nd conveying space 15b.In addition, in order to can heat the gamut on the width of nonwoven fabric 3, preferably, the length in the Y-direction of jet 16a, 16b be nonwoven fabric 3 width on length more than.
And the both ends in the X-direction of the inside of base component 31 are formed with hot air chamber C1(with reference to Fig. 2 A).Hot air chamber C1 is connected with the open-ended 14a of hot air duct 14, and, be connected with conveying space 15a, the 15b corresponding to it via jet 16a, 16b.Thus, from the hot blast in warm-air supply source 13 through after hot air duct 14 is supplied to hot air chamber C1, blowing loophole 16a, 16b conveying space 15a, 15b can be ejected into.In addition, hot air chamber C1 becomes the spray nozzle part of stream self-heating air compartment C1 midway part along with the constriction gradually towards jet 16a, 16b of hot blast.
Specifically, as shown in Figure 3, the end on the left of the X-direction of the 2nd lower surface component 312 bends to the private side of base component 31, and the space between the bending start portion of the 2nd lower surface component 312 and the 1st lower surface component 311 becomes the 1st jet 16a.The hot air chamber C1 be connected with the 1st conveying space 15a is by the sweep of the 2nd lower surface component 312, the 1st lower surface component 311, the 2nd upper surface component 314, left surface component 315, pair of side plates 34,35(reference Fig. 2 B) divide.And the hot air chamber C1 be connected with the 2nd conveying space 15b is in the shape overturn in X-direction and above-below direction by the hot air chamber C1 be connected with the 1st conveying space 15a.
In addition, in the 1st embodiment, in conveying space 15a, 15b, hot blast is contacted while flow towards downstream (opposite side) along the throughput direction of nonwoven fabric 3 in conveying space 15a, 15b from upstream side (side) with the face (in this case surperficial 3a) in two faces of nonwoven fabric 3.Therefore, the cross sectional shape of the spray nozzle part of hot air chamber C1 (taking Y-direction as the cross sectional shape of normal direction) is made to be formed as along with the downstream towards throughput direction is the tapered shape attenuated substantially, using the tip portion of this tapered shape as jet 16a, 16b.Like this, can with the downstream injection hot blast of angle θ 1 towards throughput direction relative to the face of nonwoven fabric 3 being acute angle.In addition, preferably, the position of jet 16a, 16b, the injection direction of hot blast and face (throughput direction) the angulation θ 1 of nonwoven fabric 3 be 0 ° ~ 30 °, more preferably 0 ° ~ 10 °.Like this, hot blast can be made more reliably to move along the surface current of nonwoven fabric 3.
2nd mould component 40 is structures identical with the 1st mould component 30, has base component 41, the 1st lid component 42 and the 2nd lid component 43.And being the 3rd conveying space 15c of nonwoven fabric 3 between the lower surface 41a of the base component 41 and upper surface 42a of the 1st lid component 42, is the 4th conveying space 15d of nonwoven fabric 3 between the upper surface 41b of the base component 41 and lower surface 43a of the 2nd lid component 43.In the 3rd conveying space 15c, the left side of nonwoven fabric 3 in X-direction is carried to the right, and in the 4th conveying space 15d, the right side of nonwoven fabric 3 in X-direction is carried to the left.Therefore, side on the left of the X-direction of the 2nd mould component 40 is formed with the entrance 46a entering the 3rd conveying space 15c for the nonwoven fabric 3 and outlet 46b discharged from the 4th conveying space 15d for nonwoven fabric 3, and the side on the right side of the X-direction of the 2nd mould component 40 is formed with the outlet 46c discharged from the 3rd conveying space 15c for the nonwoven fabric 3 and entrance 46d entering the 4th conveying space 15d for nonwoven fabric 3.In addition, on the left of X-direction in the lower surface 41a of base component 41, the position of (by entrance 46a side) is formed with the 3rd jet 16c of slit-shaped, on the right side of X-direction in the upper surface 41b of base component 41, the position of (by entrance 46d side) is formed with the 4th jet 16d of slit-shaped, hot air chamber C1 is formed in the inside of base component 41, this hot air chamber C1 is via jet 16c, 16d is connected with conveying space 15c, the 15d corresponding to it, further, this hot air chamber C1 is connected with the open-ended 14a of hot air duct 14.
In addition, the 2nd mould component 40 and the 1st mould component 30 arrange in the vertical direction, and are positioned at than the 1st mould component 30 position by the top.Therefore, four the conveying space 15a ~ 15d be formed in the 1st mould component 30, the 2nd mould component 40 arrange in the vertical direction, that is, the direction orthogonal with the throughput direction of nonwoven fabric 3 in conveying space 15a ~ 15d (face of nonwoven fabric 3) arranges.By making the 1st mould component 30 in this wise, the 2nd mould component 40 arranges in the vertical direction, heat time heating time (transport-route length) required when can guarantee the volume of nonwoven fabric 3 is recovered, and heating unit 11 length in the X direction can be shortened, thus the miniaturization of heating unit 11 can be sought.In addition, also can make the 1st mould component 30, the 2nd mould component 40 arranges on the direction tilted relative to above-below direction.
the volume restoration methods of nonwoven fabric
Utilize the volume recovery device 10 of said structure that the volume of nonwoven fabric 3 is recovered.In addition, in this embodiment, the surperficial 3a(male and fomale(M&F) of hot blast and nonwoven fabric 3 is made) contact while the throughput direction along nonwoven fabric 3 flows.Therefore, as shown in Figure 3, the mode being first outer peripheral face side with surperficial 3a by nonwoven fabric 3 is wound on the 1st conveying roller 12a, is supplied to afterwards in the 1st conveying space 15a, and the left side in the 1st conveying space 15a on throughput direction (X-direction) is carried to the right.In the 1st conveying space 15a, the surperficial 3a of nonwoven fabric 3 is relative with the 1st jet 16a, and the hot blast therefore ejected from the 1st jet 16a contacts while flow towards the right side (downstream) on throughput direction along the throughput direction of nonwoven fabric 3 with the surperficial 3a of nonwoven fabric 3.Its result, by heating, volume recovers nonwoven fabric 3.In addition, utilize the hot blast sprayed from the 1st jet 16a, the temperature in the 1st conveying space 15a can be made higher than the temperature of the outside of the 1st mould component 30.From this aspect, also nonwoven fabric 3 can be heated and volume recovers.
Afterwards, the nonwoven fabric 3 ejected from the 1st conveying space 15a is wound on the 2nd conveying roller 12b in the mode that back side 3b is outer peripheral face side, and direct of travel is overturn, be supplied to afterwards in the 2nd conveying space 15b, and the right side in the 2nd conveying space 15b on throughput direction is carried to the left.Now, the hot blast ejected from the 2nd jet 16b contacts while flow towards the left side (downstream) on throughput direction along the throughput direction of nonwoven fabric 3 with the surperficial 3a of nonwoven fabric 3.
Below, similarly the nonwoven fabric 3 ejected from the 2nd conveying space 15b is wound on the 3rd conveying roller 12c in the mode that surperficial 3a is outer peripheral face side, and direct of travel is overturn, be supplied to afterwards in the 3rd conveying space 15c, and the left side on throughput direction is carried to the right.Now, the hot blast ejected from the 3rd jet 16c contacts while flow towards the right side (downstream) on throughput direction along the throughput direction of nonwoven fabric 3 with the surperficial 3a of nonwoven fabric 3.Then, the nonwoven fabric 3 ejected is wound on the 4th conveying roller 12d in the mode that back side 3b is outer peripheral face side, and direct of travel is overturn, be supplied to afterwards in the 4th conveying space 15d, and the right side on throughput direction is carried to the left from the 3rd conveying space 15c.Now, the hot blast ejected from the 4th jet 16d contacts while flow towards the left side (downstream) on throughput direction along the throughput direction of nonwoven fabric 3 with the surperficial 3a of nonwoven fabric 3.
Therefore, in the 2nd conveying space 15b ~ the 4th conveying space 15d, the hot blast being injected into conveying space 15b ~ 15d can both be utilized to be heated by nonwoven fabric 3, in addition, the angle of high temperature is become from conveying space 15b ~ 15d, also nonwoven fabric 3 can be heated, thus the volume of nonwoven fabric 3 can be made to recover.Then, the state after being recovered with volume by the nonwoven fabric 3 ejected from the 4th conveying space 15d is also wound on the 5th conveying roller 12e in the mode that surperficial 3a is outer peripheral face side, and changes direct of travel, is transported to subsequent processing.
In addition, nonwoven fabric 3 not by any member supporting, and with the state being applied in tension force conveying, to contact with mould component 30,40 to prevent lax in conveying space 15a ~ 15d.In addition, the hot blast that blowing loophole 16a ~ 16d ejects contacts with the surperficial 3a of nonwoven fabric 3 while flow, afterwards, from mould component 30,40(conveying space 15a ~ 15d) nonwoven fabric 3 outlet 36b, 36c, 46b, 46c discharge.Strictly say, in outlet 36b, 36c, 46b, 46c of nonwoven fabric 3, be the outlet 17a ~ 17d of hot blast by the position of jet 16a ~ 16d side than nonwoven fabric 3 in the vertical direction.
In addition, the temperature of the hot blast at jet 16a ~ 16d place is for being more than or equal to the temperature than low 50 DEG C of the fusing point of the thermoplastic resin fibre contained by nonwoven fabric 3 and the fusing point lower than thermoplastic resin fibre is then better.Like this, thermoplastic resin fibre's melting can be prevented, and can reliably make the volume of nonwoven fabric 3 recover.
In addition, preferably, the wind speed of hot blast is made to be greater than the transporting velocity of nonwoven fabric 3 in conveying space 15a ~ 15d.Like this, the hot blast that the surperficial 3a of nonwoven fabric 3 flows becomes turbulent condition, therefore, it is possible to improve heat transfer efficiency, thus can heat nonwoven fabric 3 efficiently.In addition, utilize the hot blast of turbulent condition the fiber of nonwoven fabric 3 can be untied, also can accelerate the recovery of volume thus.Such as, the wind speed of hot blast is set in 1000 ~ 3000(m/ to divide) scope in, the transporting velocity of nonwoven fabric 3 be set in 100 ~ 500(m/ divide) scope in then better.In addition, the wind speed (m/ divides) of hot blast is the air quantity (m being supplied to conveying space 15a ~ 15d
3/ point) sectional area (m in cross section that obtains divided by conveying space 15a ~ 15d is cut off in the vertical direction
2) and the value obtained.In addition, preferably, all set up in the whole length range that the pass between above-mentioned wind speed and transporting velocity ties up to conveying space 15a ~ 15d, but, when only setting up in the scope of a part of conveying space 15a ~ 15d, the effect that hot blast brings for turbulent condition also can be obtained.
As mentioned above, in the 1st embodiment, side on the throughput direction of nonwoven fabric 3 in conveying space 15a ~ 15d towards opposite side (in this case from upstream side towards downstream) by spray hot wind in the conveying space 15a ~ 15d of the nonwoven fabric 3 be formed in the 1st mould component 30, the 2nd mould component 40, and hot blast is contacted while the throughput direction along nonwoven fabric 3 flows with a face (in this case surperficial 3a) of nonwoven fabric 3.Its result, can heat nonwoven fabric 3, thus the volume decreased because being rolled into web-like etc. of nonwoven fabric 3 can be made to recover.In addition, be not limited to the surperficial 3a(male and fomale(M&F) to nonwoven fabric 3 shown in Figure 1B) blow hot blast, also can to back side 3b(tabular surface) blow hot blast.
At this, the top blast be assumed to be to the direction orthogonal with the face of nonwoven fabric 3 to nonwoven fabric 3 send hot blast to be heated by nonwoven fabric 3.In this case, owing to blowing contrary with the direction making the volume of nonwoven fabric 3 the recover hot blast towards (extrude volume towards) to nonwoven fabric 3, therefore may be decreased through and nonwoven fabric 3 be heated and the volume recovery effects produced.In addition, the ambient air of nonwoven fabric 3 produced along with conveying nonwoven fabric 3 fails to be convened for lack of a quorum the hot wind flow hindering and should blow to the direction orthogonal with the face of nonwoven fabric 3, thus possibly cannot be heated by nonwoven fabric 3 fully.In contrast, in the 1st embodiment, do not make hot blast flow to the direction of the volume that can reduce nonwoven fabric 3, but hot blast is contacted with the face of nonwoven fabric 3 while the throughput direction along nonwoven fabric 3 flows.Therefore, it is possible to suppress the reduction of the volume recovery effects of nonwoven fabric 3, in addition, can prevent the air stream produced along with conveying nonwoven fabric 3 from hindering situation about heating nonwoven fabric 3.
In addition, because nonwoven fabric 3 is softened by heating, therefore for the ease of conveying, tension force being applied to nonwoven fabric 3, being easy to the nonwoven fabric after making heating 3 because of this tension force and extending along throughput direction.When nonwoven fabric 3 extends along throughput direction, the width of nonwoven fabric 3 can change, or volume recovery effects reduces.Therefore, in the 1st embodiment, jet 16a ~ 16d is set at the upstream side being formed in throughput direction in the conveying space 15a ~ 15d in the 1st mould component 30, the 2nd mould component 40, nonwoven fabric 3, thus hot blast can be made to move to downstream effluent from the upstream side of the throughput direction of nonwoven fabric 3.Identical by the flow direction of the throughput direction with hot blast that make nonwoven fabric 3 in this wise, compared with the situation contrary with the flow direction of hot blast with the throughput direction of nonwoven fabric 3, can suppress as much as possible to carry the tension force that nonwoven fabric 3 applies.Thus, the reduction of the change width of nonwoven fabric 3, volume recovery effects can be suppressed, in addition, nonwoven fabric 3 can be carried efficiently.But be not limited thereto, also jet can be set for the downstream of throughput direction of nonwoven fabric 3 in conveying space 15a ~ 15d, thus hot blast is sprayed towards upstream side (opposite side) from the downstream (side) of the throughput direction of nonwoven fabric 3 in conveying space 15a ~ 15d.
In addition, with regard to having been blowed the surperficial 3a of the nonwoven fabric 3 of hot blast, the fiber forming nonwoven fabric 3 has been easy to heat fused each other.When fiber thermally fuses, the gap turn narrow between fiber, may result through and heat nonwoven fabric 3 and the reduction of the volume recovery effects produced.In addition, the face of the nonwoven fabric 3 after fiber thermally fuses is hardening, and sense of touch, processability reduce.But in the 1st embodiment, the nonwoven fabric 3 ejected from the 2nd conveying space 15b is wound up to have blowed the mode that the surperficial 3a of hot blast is outer peripheral face side and curves bending by the 3rd conveying roller 12c.Equally, the nonwoven fabric 3 ejected from the 4th conveying space 15d is wound up to have blowed the mode that the surperficial 3a of hot blast is outer peripheral face side and curves bending by the 5th conveying roller 12e.That is, the 3rd conveying roller 12c, the 5th conveying roller 12e(are equivalent to deformation mechanism) be that convex mode makes the nonwoven fabric 3 ejected from the 1st mould component 30, the 2nd mould component 40 be out of shape with the surperficial 3a side having been blowed hot blast of nonwoven fabric 3.
Its result, pulling force (pulling force towards the upstream side of transport path and the pulling force towards downstream) along the circumference of the 3rd conveying roller 12c, the 5th conveying roller 12e is acted on to the surperficial 3a side of the nonwoven fabric 3 be wound onto on the 3rd conveying roller 12c, the 5th conveying roller 12e, thus the fiber that the heat fused of the surperficial 3a side of nonwoven fabric 3 gets up can be untied.Therefore, the gap widens between the fiber of nonwoven fabric 3, can suppress the reduction of the volume recovery effects produced by heating nonwoven fabric 3.In addition, untied by the fiber of the surperficial 3a side by nonwoven fabric 3, the surperficial 3a of nonwoven fabric 3 can be made to become soft, sense of touch, processability (such as easily bending property) improve.Particularly in the 1st embodiment, the 5th conveying roller 12e is that convex mode makes nonwoven fabric 3 be out of shape with the surperficial 3a of the last nonwoven fabric 3 ejected from the 4th conveying space 15d.Therefore, it is possible to make nonwoven fabric 3 be transported to subsequent processing with the fiber of the surperficial 3a side of the last nonwoven fabric 3 that heat fused gets up in the 4th conveying space 15d by the state untied, therefore, it is possible to improve the product quality employing nonwoven fabric 3 further.In addition, in the 1st embodiment, mechanism's (having the mechanism of the 2nd mould component 40, the 4th jet 16d and the 4th outlet 17d) of the heating nonwoven fabric 3 in mechanism's (having the mechanism of the 1st mould component 30, the 2nd jet 16b and the 2nd outlet 17b) of the heating nonwoven fabric 3 in the 2nd conveying space 15b and the 4th conveying space 15d is equivalent to heating arrangements of the present invention.
In addition, the 3rd conveying roller 12c, the 5th conveying roller 12e for making nonwoven fabric 3 be out of shape are located at the outside of the 1st mould component 30, the 2nd mould component 40.The outside of the 1st mould component 30, the 2nd mould component 40 is compared with spraying the inside (inside of conveying space 15a ~ 15d) of the 1st mould component 30 of hot blast, the 2nd mould component 40, and temperature is lower.Therefore, the 3rd conveying roller 12c, the 5th conveying roller 12e make to be out of shape at the naturally chilled nonwoven fabric 3 in outside of the 1st mould component 30, the 2nd mould component 40.Because the fiber softened after heating is easy to extend, therefore with the fiber in heating process each other compared with, naturally chilled fiber is easier to separation each other.Therefore, by making the chilled nonwoven fabric 3 of nature be out of shape, can more reliably the fiber of nonwoven fabric 3 be untied.
In addition, such as with compared with the situation making nonwoven fabric 3 be out of shape in the space of spraying hot blast, the situation that the chilled nonwoven fabric 3 of nature is out of shape more is difficult to be out of shape (habituation along the outer peripheral face of the 3rd conveying roller 12c, the 5th conveying roller 12e bends) with the habituation of nonwoven fabric 3.For the situation that nonwoven fabric 3 winds up in the outside of the 1st mould component 30, the 2nd mould component 40 by the 2nd conveying roller 12b, the 4th conveying roller 12d, can be described as the situation that nature chilled nonwoven fabric 3 is out of shape and also there is effect similar to the above.In addition, be not limited to make nonwoven fabric 3 naturally cool the way of distortion, nonwoven fabric 3 also can be made on one side to cool in an active manner while distortion.Such as, the wind (temperature lower than by the wind of the temperature of the nonwoven fabric 3 after heating) of cooling also can be blowed to the nonwoven fabric 3 be wound onto on the 3rd conveying roller 12c, the 5th conveying roller 12e.
In addition, in the 1st embodiment, utilize and nonwoven fabric 3 be wound on outer peripheral face and change direct of travel and the 3rd conveying roller 12c of nonwoven fabric 3, the 5th conveying roller 12e can be carried to be untied by the fiber of the surperficial 3a side of nonwoven fabric 3.Therefore, compared with the situation of the mechanism for making nonwoven fabric 3 be out of shape also is set in addition except the 3rd conveying roller 12c, the 5th conveying roller 12e are set, can prevent parts count from increasing, in addition, with also set the situation of the distortion operation of nonwoven fabric 3 in addition except the conveying operation setting nonwoven fabric 3 compared with, the time of volume Recovery processing can be shortened.But be not limited thereto, such as, also can not conveying roller be set and the deformation mechanism of semi-cylindrical form be arranged at the downstream of conveying space 15a ~ 15d.In addition, in this embodiment, make nonwoven fabric 3 be that convex mode is out of shape with nonwoven fabric 3 along continuous direction, but be not limited thereto, nonwoven fabric 3 also can be made to be that convex mode is out of shape with nonwoven fabric 3 along width.
In addition, the fiber that have passed through the surperficial 3a side of the nonwoven fabric 3 of the 3rd conveying roller 12c is untied, and the state of nonwoven fabric 3 with the gap widens between fiber is supplied to the 3rd conveying space 15c.Therefore, in the 3rd conveying space 15c, hot blast can contact while the throughput direction along nonwoven fabric 3 flows with the surperficial 3a of the nonwoven fabric 3 having untied fiber, therefore, it is possible to improve the efficiency of heating surface to nonwoven fabric 3.By in this wise making nonwoven fabric 3 be after convex mode is out of shape with the face being blowed hot blast, again blowing hot blast to nonwoven fabric 3 and nonwoven fabric 3 is heated, the efficiency of heating surface to nonwoven fabric 3 can be improved, and then the volume of nonwoven fabric 3 can be made further to recover.But being not limited thereto, also can be not to the structure that nonwoven fabric 3 heats again after making nonwoven fabric 3 distortion.Such as, also can make the structure that heating unit 11 does not have the 2nd mould component 40, after the direct of travel of the nonwoven fabric 3 utilizing the 3rd conveying roller 12c change to eject from the 2nd conveying space 15b, this nonwoven fabric 3 is transported to subsequent processing.In addition, in the 1st embodiment, mechanism's (having the mechanism of the 2nd mould component 40, the 3rd jet 16c and the 3rd outlet 17c) of the heating nonwoven fabric 3 in the 3rd conveying space 15c is equivalent to other heating arrangements of the present invention.
In addition, in the volume recovery device 10 of the 1st embodiment, in order to make heating unit 11 miniaturized in the X direction, and the 1st mould component 30, the 2nd mould component 40 and conveying space 15a ~ 15d are arranged on above-below direction, namely orthogonal with the throughput direction of nonwoven fabric 3 in conveying space 15a ~ 15d direction with arranging.Therefore, such as, in the 2nd conveying space 15b and ensuing 3rd conveying space 15c of upstream side, the throughput direction of nonwoven fabric 3 is contrary direction.Therefore, the 3rd conveying roller 12c outer peripheral face carry out carrying in order to be wound on by the nonwoven fabric 3 that have passed through the 2nd conveying space 15b and nonwoven fabric 3 is supplied to the 3rd conveying space 15c, and nonwoven fabric 3 is overturn.The 3rd conveying roller 12c that nonwoven fabric 3 is overturn is changed to compared with the 5th conveying roller 12e upward with making the transport path of nonwoven fabric 3 from horizontal direction (X-direction), the winding angle comparatively large (θ 2 > θ 3) of nonwoven fabric 3.The winding angle of nonwoven fabric 3 is larger, and the degree of deformation (flexibility) of nonwoven fabric 3 more increases, thus can be untied by the fiber of the surperficial 3a side of nonwoven fabric 3 more reliably.Namely, by the 1st mould component 30, the 2nd mould component 40 and conveying space 15a ~ 15d are configured in the mode arranged in the vertical direction, heating unit 11 miniaturization in the X direction can be sought, and can more reliably the fiber of the surperficial 3a side of nonwoven fabric 3 be untied.
In addition, in the 1st embodiment, make the diameter of the 1st conveying roller 12a ~ the 5th conveying roller 12e identical, but be not limited thereto.Such as, also can be used in the fiber of the surperficial 3a side of nonwoven fabric 3 is untied the 3rd conveying roller 12c, the 5th conveying roller 12e diameter be less than the diameter of other conveying rollers 12a, 12b, 12d.Like this, the degree of deformation (flexibility) being wound on the nonwoven fabric 3 on the 3rd conveying roller 12c, the 5th conveying roller 12e increases, thus can be untied by the fiber of the surperficial 3a side of nonwoven fabric 3 more reliably.
In addition, may be shunk on continuous print direction by warmed-up nonwoven fabric 3 in conveying space 15a ~ 15d.Therefore, also can, not make the degree that nonwoven fabric 3 is lax in conveying space 15a ~ 15d, the transporting velocity be wound onto than the nonwoven fabric 3 on the conveying roller 12b ~ 12e of conveying space 15a ~ 15d downstream be made to be slower than the transporting velocity of nonwoven fabric 3 in the porch of conveying space 15a ~ 15d.Specifically, the peripheral speed value of the conveying roller of the 1st conveying roller 12a or upstream side also can be made to be greater than the peripheral speed value of the 5th conveying roller 15e or the conveying roller of side farther downstream.Like this, can prevent from being softened and the nonwoven fabric 3 easily extended is excessively stretched, thus the change width of nonwoven fabric 3, the reduction of volume recovery effects can be suppressed.
In addition, also can cool nonwoven fabric 3 before nonwoven fabric 3 is transported to subsequent processing.Such as, also can arrange in the downstream of the 5th conveying roller 12e and the heater 132 in the volume recovery device 10 shown in Fig. 2 A be removed and the device of the structure obtained, at the 1st mould component 30, the 2nd mould component 40(the 1st conveying space 15a ~ the 4th conveying space 15d) the nonwoven fabric 3 of delivered inside be not blow hot blast but blow the cold wind of temperature lower than the temperature of nonwoven fabric 3.Like this, the temperature because of nonwoven fabric 3 can be suppressed high and the reduction of the phenomenon caused, the change width namely caused because nonwoven fabric 3 is softened, volume recovery effects.
2nd embodiment
Fig. 4 is the sectional view (sectional view being normal direction with the width of nonwoven fabric 3) of the volume recovery device 50 of the nonwoven fabric 3 of the 2nd embodiment.Fig. 5 is the sectional view (sectional view being normal direction with the width of nonwoven fabric 3) around the 1st mould component the 60 ~ 3rd mould component 80.The volume recovery device 50 of the nonwoven fabric 3 of the 2nd embodiment has heating unit 11 and the 1st conveying roller 12a ~ the 5th conveying roller 12e.Heating unit 11 has warm-air supply source 13, hot air duct 14, circulating line 18, the 1st mould component 60(be equivalent to heating unit), the 2nd mould component 70(is equivalent to heating unit), the 3rd mould component 80(is equivalent to heating unit), for by spray hot wind to the jet 16a ~ 16d of the conveying space 15a ~ 15d be formed in the 1st mould component the 60 ~ 3rd mould component 80 and be used for outlet 17a ~ 17d of making hot blast discharge from conveying space 15a ~ 15d.
In the 2nd embodiment, three the 1st mould component the 60 ~ 3rd mould components 80 arrange in the vertical direction, but in a same manner as in the first embodiment, nonwoven fabric 3 is being heated while being formed on four conveying space 15a ~ 15d in the 1st mould component the 60 ~ 3rd mould component 80.Specifically, the 1st conveying space 15a between the upper surface 61a of the base component 61 that nonwoven fabric 3 has through the 1st the mould component 60 and lower surface 62a of the 1st lid component 62, the 2nd conveying space 15b between the lower surface 71a of the base component 71 that the 2nd mould component 70 has and the upper surface 72a of the 1st lid component 72, the 3rd conveying space 15c between the upper surface 71b of the base component 71 that same 2nd mould component 70 has and the lower surface 73a of the 2nd lid component 73, the 4th conveying space 15d between the lower surface 81a of the base component 81 that the 3rd mould component 80 has and the upper surface 82a of the 1st lid component 82.
In addition, jet 16a ~ the 16d of hot blast is formed at the upstream side of the throughput direction of the nonwoven fabric 3 of each conveying space 15a ~ 15d, hot air chamber C1 is formed in the inside of the 1st mould component the 60 ~ 3rd mould component 80, this hot air chamber C1 is connected with the conveying space 15a ~ 15d corresponding to it by jet 16a ~ 16d, further, this hot air chamber C1 is connected with the open-ended 14a of hot air duct 14.In hot air chamber C1, the stream of hot blast is along with the constriction gradually towards jet 16a ~ 16d.
Specifically, such as, as shown in Figure 5, the hot air chamber C1 be connected with the 4th conveying space 15d is the 1st lower surface component 811 and the 2nd lower surface component 812(sweep of the lower surface 81a being configured base component 81) and divide along the bent member 813 of the open-ended 14a of hot air duct 14.And, the cross sectional shape (taking Y-direction as the cross sectional shape of normal direction) of the sweep of the 2nd lower surface component 812 tilts to the upstream side of throughput direction relative to jet 16d, contacts while the throughput direction along nonwoven fabric 3 moves to downstream effluent from upstream side with the face of nonwoven fabric 3 to make hot blast.In addition, ratio the 2nd lower surface component 812 configured by the 1st lower surface component 811 of throughput direction upstream side in the vertical direction leans on conveying space 15d side.Like this, hot blast can be made more reliably to flow along the throughput direction of nonwoven fabric 3.In addition, by arranging the bent member 813 along the open-ended 14a of hot air duct 14, the hot blast from hot air duct 14 can be made to flow to jet 16d swimmingly, the hot blast retention areas in hot air chamber C1 can be cut down.
In addition, in the 2nd embodiment, the sirocco reclamation that blowing loophole 16a ~ 16d can be ejected.Therefore, be provided with in the downstream of the throughput direction of the nonwoven fabric 3 of each conveying space 15a ~ 15d and be formed in the opening portion of base component 61,71,81 and the outlet 17a ~ 17d of hot blast.In addition, in order to make hot blast flow along the throughput direction of nonwoven fabric 3, and outlet 17a ~ 17d is provided with in the side that the surperficial 3a relative to nonwoven fabric 3 is identical with the side at jet 16a ~ 16d place.And be formed in the inside of the 1st mould component the 60 ~ 3rd mould component 80 and reclaim room C2, this recovery room C2 is connected with conveying space 15a ~ 15d by outlet 17a ~ 17d, and this recovery room C2 is connected with the open-ended 18a of circulating line 18.From reclaiming the circulating line 18(that extends out of room C2 with reference to Fig. 4) be connected with the pipeline 19 that hot blast produces the suction side in source 13.In addition, in the diagram, the 2nd mould component 70, the warm-air supply source 13 corresponding to the 3rd mould component 80, hot air duct 14, circulating line 18 is eliminated.In addition, in order to prevent the foreign matters such as the Soft flocks of nonwoven fabric 3 and hot blast to be together recycled into, also filter can be located at outlet 17a ~ 17d, this filter can make hot blast pass through but can stop foreign matter.
In the heating unit 11 of said structure, the hot blast that blowing loophole 16a ~ 16d sprays flows along the throughput direction of nonwoven fabric 3, after being recycled to circulating line 18 from recovery room C2, again heated by the heater 132 in hot blast generation source 13, and Self-air-heating pipeline 14 is transported to conveying space 15a ~ 15d.By allowing to the hot air circulation heated by nonwoven fabric 3 in this wise, the efficiency of heating surface of heater 132 pairs of hot blasts can be improved, in addition, the hot blast rate of the outside being discharged to the 1st mould component the 60 ~ 3rd mould component 80 can be reduced, thus the impact of hot blast on other operations can be reduced.In addition, compared with above-mentioned 1st embodiment, the temperature of the outside of the 1st mould component the 60 ~ 3rd mould component 80 can be made to reduce, therefore, it is possible to make nonwoven fabric 3 be out of shape under the state be naturally cooled further.Therefore, it is possible to more reliably the fiber of the surperficial 3a side of nonwoven fabric 3 is untied, and, nonwoven fabric 3 related habituation distortion (habitual bending) can be suppressed.
And, in the volume recovery device 50 of said structure, first, the mode nonwoven fabric 3 be wound on the 1st conveying roller 12a being outer peripheral face side is supplied in the 1st conveying space 15a, and the left side on throughput direction is carried to the right with back side 3b.The nonwoven fabric 3 ejected from the 1st conveying space 15a be wound on the 2nd conveying roller 12a in the mode that surperficial 3a is outer peripheral face side and this nonwoven fabric 3 is overturn, be supplied in the 2nd conveying space 15b afterwards, and the right side on throughput direction being carried to the left.Below, similarly the nonwoven fabric 3 ejected from the 2nd conveying space 15b is wound on the 3rd conveying roller 12c in the mode that back side 3b is outer peripheral face side and this nonwoven fabric 3 is overturn, be supplied to afterwards in the 3rd conveying space 15c, and the left side on throughput direction is carried to the right.The nonwoven fabric 3 ejected from the 3rd conveying space 15c be wound on the 4th conveying roller 12d in the mode that surperficial 3a is outer peripheral face side and this nonwoven fabric 3 is overturn, be supplied in the 4th conveying space 15d afterwards, and the right side on throughput direction being carried to the left.The nonwoven fabric 3 ejected from the 4th conveying space 15d is wound on the 5th conveying roller 12e in the mode that back side 3b is outer peripheral face side, and changes direct of travel, be transported to subsequent processing.
In each conveying space 15a ~ 15d, contact due to hot blast while with the surperficial 3a of nonwoven fabric 3 while the throughput direction along nonwoven fabric 3 flows, therefore, it is possible to nonwoven fabric 3 is heated, in addition, the angle becoming high temperature in conveying space 15a ~ 15d is considered, also nonwoven fabric 3 can be heated, thus the volume of nonwoven fabric 3 can be made to recover.In addition, not make hot blast along the direction flowing that the volume of nonwoven fabric 3 can be made to reduce, but hot blast is flowed along the throughput direction of nonwoven fabric 3, therefore, it is possible to suppress the reduction of the volume recovery effects produced by heating nonwoven fabric 3.
In addition, the 2nd conveying roller 12b, the 4th conveying roller 12d(are equivalent to deformation mechanism) be that convex mode makes the nonwoven fabric 3 ejected from the 1st mould component 30, the 2nd mould component 40 be out of shape with the surperficial 3a side having been blowed hot blast of nonwoven fabric 3.Thus, the fiber that the heat fused of the surperficial 3a side of nonwoven fabric 3 gets up can be untied, therefore, gap widens between the fiber of nonwoven fabric 3, the reduction of the volume recovery effects produced by heating nonwoven fabric 3 can being suppressed, in addition, the surperficial 3a of nonwoven fabric 3 can be made to become soft.In addition, in the 2nd embodiment, mechanism's (having the mechanism of the 2nd mould component 40, the 3rd jet 16c and the 3rd outlet 17c) of the heating nonwoven fabric 3 in mechanism's (having the mechanism of the 1st mould component 30, the 1st jet 16a and the 1st outlet 17a) of the heating nonwoven fabric 3 in the 1st conveying space 15a and the 3rd conveying space 15c is equivalent to heating arrangements of the present invention.
And, utilize the 2nd conveying roller 12b, the 4th conveying roller 12d and be that nonwoven fabric 3 after convex mode is out of shape is reheated in the 2nd conveying space 15b, the 4th conveying space 15d with surperficial 3a.Thus, the 2nd embodiment compared with above-mentioned 1st embodiment, the increased frequency under the state that the fiber utilizing conveying roller by surperficial 3a side has been untied, nonwoven fabric 3 heated again.Because the fiber by effects on surface 3a side is heated by the nonwoven fabric 3 untied again, improve the efficiency of heating surface of nonwoven fabric, therefore in the 2nd embodiment, the efficiency of heating surface of nonwoven fabric 3 is raised further, thus the volume of nonwoven fabric 3 can be made more reliably to recover.But, the 1st embodiment compared with the 2nd embodiment, the negligible amounts of the mould component of the 1st embodiment, thus heating unit 11 miniaturization in the vertical direction can be sought.In addition, in the 2nd embodiment, mechanism's (having the mechanism of the 2nd mould component 40, the 4th jet 16d and the 4th outlet 17d) of the heating nonwoven fabric 3 in mechanism's (having the mechanism of the 1st mould component 30, the 2nd jet 16b and the 2nd outlet 17b) of the heating nonwoven fabric 3 in the 2nd conveying space 15b and the 4th conveying space 15d is equivalent to other heating arrangements of the present invention.
In addition, in the 2nd embodiment, the 5th conveying roller 12e is that convex mode makes nonwoven fabric 3 be out of shape with the back side 3b of the last nonwoven fabric 3 ejected from the 4th conveying space 15d.Therefore, also can arrange in the downstream of the 5th conveying roller 12e can be the conveying roller that convex mode makes nonwoven fabric 3 be out of shape with the surperficial 3a of nonwoven fabric 3.Like this, nonwoven fabric 3 can be made to be transported to subsequent processing with the fiber of the surperficial 3a side of the last nonwoven fabric 3 that heat fused gets up in the 4th conveying space 15d by the state untied, therefore, it is possible to improve the product quality employing nonwoven fabric 3 further.
other embodiments
Above-mentioned embodiment completes for the ease of understanding the present invention, and is not used in and limits and explain the present invention.In addition, in the scope not exceeding purport of the present invention, can change the present invention, improve, and certain the present invention comprises its equivalent.Such as distortion shown below can be carried out.
Such as, in the above-described embodiment for the heating unit 11 of the throughput direction horizontal arrangement type of (horizontal direction) along the X direction of the nonwoven fabric 3 of conveying in mould component 30 ~ 40,60 ~ 80, but be not limited thereto.Such as, also can be the heating unit of throughput direction along the longitudinal type of above-below direction of the nonwoven fabric carried in mould component.In addition, in the above-described embodiment, multiple mould component 30 ~ 40,60 ~ 80 arranges in the vertical direction, and nonwoven fabric 3 is being blowed hot blast several times while being formed on the multiple conveying space 15a ~ 15d in mould component 30 ~ 40,60 ~ 80, but is not limited thereto.Such as, (direction along the throughput direction of nonwoven fabric in the mould component) arrangement in the horizontal direction of multiple mould component can also be made.In addition, also nonwoven fabric can be heated being formed in a conveying space in the mould component extending longer on the continuous direction of nonwoven fabric 3, or make number of times nonwoven fabric being blowed to hot blast be 1 time.In these situations above-mentioned, without the need to making nonwoven fabric overturn between each mould component, but will between mould component or mould component downstream arrange can be mechanism's (conveying roller) that convex mode makes nonwoven fabric be out of shape with the face being blowed hot blast.
In addition, in the above-described embodiment, in a mould component 30 ~ 40,60 ~ 80, be formed with the conveying space 15a ~ 15d of one or two nonwoven fabric 3, but be not limited thereto, also can form the conveying space of the nonwoven fabric of more than 3 in a mould component.In addition, in the above-described embodiment, the quantity of the mould component 30 ~ 40,60 ~ 80 that heating unit 11 has is two or three, but is not limited thereto, and also can make the mould component that heating unit has 1 mould component or more than 4.
In addition, in the above-described embodiment, to make to be used as top layer sheet 3(Figure 1B of pet sheet material 1) the volume of nonwoven fabric 3 situation about recovering, but to be not limited thereto.Such as, being used in the absorbent commodity such as sanitary napkin, disposable diaper, the volume of the nonwoven fabric of the cleaning sheet be arranged on cleaning mop etc. is when recovering, and the present invention is also effective.In addition, in the above-described embodiment, situation about recovering for the volume of continuous the nonwoven fabric 3 making to be rolled into web-like, but be not limited thereto.Such as, even be cut into the nonwoven fabric after the length of regulation, also carry out keeping due to stacked and volume may be caused to reduce, even when therefore making the volume of the nonwoven fabric of the length being cut into regulation recover, the present invention is also effective.
description of reference numerals
1, pet sheet material; 3, top layer sheet (nonwoven fabric); 3t, groove portion; 3p, teat; 3h, through hole; 4, absorber; 4c, absorbability core; 4t, cover; 5, bottom chip; 10, volume recovery device; 11, heating unit; 12a ~ 12e, conveying roller (deformation mechanism); 13, warm-air supply source; 131, fan; 132, heater; 14, hot air duct; 15a ~ 15d, conveying space; 16a ~ 16d, jet; 17a ~ 17d, outlet; 18, circulating line; C1, hot air chamber; C2, recovery room; 30, the 1st mould component (shell unit); 31, base component; 32, the 1st lid component; 33, the 2nd lid component; 34, side plate; 35, side plate; 40, the 2nd mould component (shell unit); 41, base component; 42, the 1st lid component; 43, the 2nd lid component; 50, volume recovery device; 60, the 1st mould component (shell unit); 61, base component; 62, the 1st lid component; 70, the 2nd mould component (shell unit); 71, base component; 72, the 1st lid component; 73, the 2nd lid component; 80, the 3rd mould component (shell unit); 81, base component; 82, the 1st lid component.
Claims (6)
1. a volume recovery device for nonwoven fabric, it by nonwoven heating, thus makes the volume of above-mentioned nonwoven fabric recover for blowing hot blast to nonwoven fabric, it is characterized in that,
The volume recovery device of this nonwoven fabric comprises heating arrangements and deformation mechanism,
This heating arrangements comprises: shell unit, and it is formed with the conveying space for carrying above-mentioned nonwoven fabric; Jet, its for the side on the throughput direction of above-mentioned nonwoven fabric in above-mentioned conveying space towards opposite side by spray hot wind in above-mentioned conveying space; And outlet, it is discharged from above-mentioned conveying space for making above-mentioned hot blast, and above-mentioned hot blast contacts while flow along above-mentioned throughput direction with a face in two faces of above-mentioned nonwoven fabric; This deformation mechanism is that convex mode is out of shape for making the above-mentioned nonwoven fabric that ejects from above-mentioned shell unit with that side, an above-mentioned face of above-mentioned nonwoven fabric.
2. the volume recovery device of nonwoven fabric according to claim 1, is characterized in that,
Above-mentioned deformation mechanism makes the naturally chilled above-mentioned nonwoven fabric distortion in the outside of above-mentioned shell unit.
3. the volume recovery device of nonwoven fabric according to claim 1, is characterized in that,
Above-mentioned deformation mechanism above-mentioned nonwoven fabric can be wound up the conveying roller carrying out carrying.
4. the volume recovery device of nonwoven fabric according to claim 1, is characterized in that,
The above-mentioned nonwoven fabric that have passed through above-mentioned deformation mechanism utilizes other above-mentioned heating arrangements to heat again.
5. the volume recovery device of nonwoven fabric according to claim 4, is characterized in that,
The above-mentioned conveying space of the above-mentioned conveying space of above-mentioned heating arrangements and other above-mentioned heating arrangements is arranged on the direction intersected with the throughput direction of above-mentioned nonwoven fabric in above-mentioned conveying space with arranging,
Above-mentioned deformation mechanism is such conveying roller: wound up by the above-mentioned nonwoven fabric of the above-mentioned conveying space that have passed through above-mentioned heating arrangements and carry, while make above-mentioned nonwoven fabric overturn in order to above-mentioned nonwoven fabric is supplied to the above-mentioned conveying space of other above-mentioned heating arrangements.
6. a volume restoration methods for nonwoven fabric, blows hot blast to nonwoven fabric and by nonwoven heating, thus the volume of above-mentioned nonwoven fabric is recovered, and it is characterized in that,
The volume restoration methods of this nonwoven fabric comprises the steps:
Side on the throughput direction of above-mentioned nonwoven fabric in conveying space towards opposite side by spray hot wind in the above-mentioned conveying space of the above-mentioned nonwoven fabric be formed in shell unit, by making above-mentioned hot blast while contact while flow along above-mentioned throughput direction with a face in two faces of above-mentioned nonwoven fabric, by above-mentioned nonwoven heating; And
The above-mentioned nonwoven fabric ejected from above-mentioned shell unit is made to be that convex mode is out of shape with that side, an above-mentioned face of above-mentioned nonwoven fabric.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-217198 | 2013-10-18 | ||
| JP2013217198A JP5728554B2 (en) | 2013-10-18 | 2013-10-18 | Non-woven fabric bulk recovery device and non-woven fabric bulk recovery method |
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| Publication Number | Publication Date |
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| CN104499238A true CN104499238A (en) | 2015-04-08 |
| CN104499238B CN104499238B (en) | 2016-01-20 |
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| CN201310541205.6A Active CN104499238B (en) | 2013-10-18 | 2013-11-05 | The volume recovery device of nonwoven fabric and the volume restoration methods of nonwoven fabric |
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| Country | Link |
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| US (1) | US10041200B2 (en) |
| JP (1) | JP5728554B2 (en) |
| CN (1) | CN104499238B (en) |
| WO (1) | WO2015056543A1 (en) |
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| CN109253605A (en) * | 2017-07-14 | 2019-01-22 | Ykk株式会社 | Drying machine |
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| CN110318197A (en) * | 2019-07-25 | 2019-10-11 | 佛山市国特科技有限公司 | A kind of stentering forming dryer |
| CN113427886B (en) * | 2021-07-14 | 2022-04-22 | 浙江舒凡纺织有限公司 | Manufacturing method of waterproof wear-resistant decorative fabric |
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Also Published As
| Publication number | Publication date |
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| US10041200B2 (en) | 2018-08-07 |
| JP2015078465A (en) | 2015-04-23 |
| WO2015056543A1 (en) | 2015-04-23 |
| US20160244903A1 (en) | 2016-08-25 |
| JP5728554B2 (en) | 2015-06-03 |
| CN104499238B (en) | 2016-01-20 |
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